JP2005251306A - Chucking apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chucking apparatus in which thinning and miniaturizing can be performed. <P>SOLUTION: This apparatus is the chucking apparatus in which a plurality of pawl main bodies are provided movably in the direction of a diameter of a hub main body of a turntable and a disk is held by pressing a disk central hole part by the pawl main body. An elastic member energizing the pawl main body to the outside for the hub main body is provided, the pawl main body has a pawl part contacting to the disk and a pawl side stopper regulating movement by the elastic member in the outer direction, the hub main body has an opening part for pawl in which the pawl part can be projected in the outer direction, and a hub side stopper abutting to the pawl side stopper, in a recording/reproducing state in which the disk is held by the pawl part, when thickness of the disk is small, the pawl part is moved to the outward comparing with the case in which thickness of the disk is large, while a position of the pawl part becomes lower. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disk device that performs recording or reproduction on a disk-shaped recording medium such as a CD or DVD, and is particularly suitable for a so-called slot-in type disk device in which a disk can be directly inserted or ejected from the outside. The present invention relates to a chucking device.

Conventional disk devices often employ a loading system in which a disk is placed on a tray or turntable, and the tray or turntable is mounted in the apparatus main body.
However, in such a loading method, there is a limit to making the disk device main body thinner as much as a tray and a turntable are required.
On the other hand, as a slot-in type disk device, a system in which a disk is pulled by bringing a conveying roller into contact with the disk surface is proposed (for example, Patent Document 1).
Japanese Patent Laid-Open No. 7-220353

However, in the slot-in method as proposed in Patent Document 1, for example, since the conveying roller longer than the disk diameter is used, the apparatus width must be widened, and the thickness is increased by the conveying roller.
Therefore, in such a slot-in type disk device, it is difficult to reduce the thickness and size of the disk device body.

Accordingly, an object of the present invention is to provide a chucking device that can be reduced in thickness and size.
In particular, the present invention focuses on reducing the height space for inserting a disk above the turntable in a standby state in which no disk is inserted in the disk device, so that the disk device can be thinned. An object is to provide a king device.

The chucking device according to the first aspect of the present invention is a chucking device in which a plurality of claw bodies are movably provided in a radial direction of a hub body of a turntable, and a disk is held by pressing a disk center hole portion with the claw body. An elastic member for urging the claw main body outward with respect to the hub main body, and the claw main body is moved outward by the claw portion contacting the disk and the elastic member. A claw-side stopper that regulates, the hub body has a claw opening that allows the claw portion to protrude outward, and a hub-side stopper that contacts the claw-side stopper, and the disc is When the disc is thin in the recording / reproducing state held by the claw, the claw moves outward as compared with the case where the disc is thick, and the position of the claw Characterized by low That.
The present invention according to claim 2 is the chucking device according to claim 1, wherein the upward guide surface provided on the front side of the claw body is provided at a position facing the upward guide surface. The down-facing receiving surface of the hub body is provided with an inclination such that the front side is lowered.
The chucking device according to a third aspect of the present invention is a chucking device in which a plurality of claw bodies are movably provided in a radial direction of a hub body of a turntable, and a disk is held by pressing a disk center hole portion with the claw body. An elastic member for urging the claw main body outward with respect to the hub main body, and the claw main body is moved outward by the claw portion contacting the disk and the elastic member. A claw-side stopper that regulates, the hub body has a claw opening that allows the claw part to protrude outward, and a hub-side stopper that abuts the claw-side stopper, The claw-side stopper that restricts the outward movement of the elastic material is more distal than the contact portion with the lower part of the lower end portion of the claw body in the standby state where the disc is not held by the claw portion. Provided on the side, front The hub side stopper abutting on the claw side stopper, characterized in that the inclined surface lower side closer to other party side.
According to a fourth aspect of the present invention, in the chucking device according to the first aspect, a downward guide surface is provided at a position below the tip end portion of the claw portion, and the hub main body at a position facing the downward guide surface. An upward receiving surface is provided, and the downward guide surface is constituted by at least a first inclined surface and a second inclined surface, and when the claw portion is pressed from above by the disk, the first inclined surface , The tip of the claw portion is inserted into the center hole portion of the disk or a surface that comes into contact with the upward receiving surface until it is inserted into the center hole portion of the disk, the second inclined surface, After the tip of the claw portion is inserted into the center hole of the disc, the second contact surface is in contact with the upward receiving surface, and the second inclined surface is more angled with respect to the pressing direction than the first inclined surface. By reducing the size and pressing the claw part from above, The guide surface slides along the upward receiving surface, wherein the claw portion is moved inwardly.
According to a fifth aspect of the present invention, in the chucking device according to the first aspect, a coil spring is used as the elastic member, and a contact position between the claw-side stopper and the hub-side stopper is set at the center of the coil spring. It is provided below the line and is provided inward from the claw portion.
According to a sixth aspect of the present invention, in the chucking device according to the first aspect, the lower end surface of the claw body has an arc shape.
A disk device according to a seventh aspect of the present invention is a disk device using the chucking device according to any one of the first to sixth aspects, wherein a chassis exterior is constituted by a base body and a lid, A front surface of the chassis exterior is formed with a disk insertion slot for directly inserting a disk, a spindle motor and a pickup are held by a traverse provided in the base body, and the turntable is provided on the upper surface of the spindle motor. The traverse is moved close to and away from the base body.

According to the present invention, the disk device can be reduced in thickness and size.
In particular, according to the present invention, the disk device can be thinned by reducing the height space for inserting the disk above the turntable in the standby state where the disk is not inserted into the disk device.

The chucking device according to the first embodiment of the present invention is provided with an elastic member that urges the claw main body outwardly with respect to the hub main body, and the claw main body includes a claw portion that comes into contact with the disk and an outer member formed by the elastic member. The hub body has a claw opening that allows the claw portion to protrude outward, and a hub side stopper that abuts the claw side stopper. When the disc is thin in the recording / playback state held by the claw, the claw moves outward and the position of the claw becomes lower than when the disc is thick It is. According to the present embodiment, even when the movement stroke of the claw body in the radial direction of the hub body is increased in response to the variation in the disk thickness, the claw height can be kept low, and the disk is added to the disk device. The height space for inserting the disc above the turntable can be reduced in the standby state where the disc is not inserted, and the disc is held by the claw portion. Since the height protruding upward can be reduced, the disk device can be made thinner.
In the chucking device according to the first embodiment, the second embodiment of the present invention is provided at an upper guide surface provided on the front side of the nail body and at a position facing the upper guide surface. The downward receiving surface of the hub body is provided with an inclination that the front side is lowered. According to the present embodiment, the length of the disc pressing surface of the nail body can be shortened and the nail height can be kept low.
The chucking device according to the third embodiment of the present invention is provided with a plurality of claw bodies movably provided in the radial direction of the hub body of the turntable, and a chuck that holds the disc by pressing the disc center hole with the claw body. The king device is provided with an elastic member that urges the claw body outward with respect to the hub body, and the claw body includes a claw portion that comes into contact with the disk, and a claw side that regulates outward movement by the elastic member. The hub body has a claw opening that allows the claw portion to protrude outward, and a hub side stopper that contacts the claw side stopper, and the claw body is moved outward by the elastic member. The claw-side stopper that controls the claw is provided on the front side of the lower part of the claw body in the standby state where the disc is not held by the claw, and the hub-side stopper that contacts the claw-side stopper , Lower side first It is obtained by the inclined surface closer to the side. According to the present embodiment, the tip of the claw body in the standby state can be lowered, and the height space for inserting the disk above the turntable can be reduced.
According to a fourth embodiment of the present invention, in the chucking device according to the first embodiment, a downward guide surface is provided at a position below the tip of the claw portion, and the hub main body at a position facing the downward guide surface. An upward receiving surface is provided, and the downward guide surface is composed of at least a first inclined surface and a second inclined surface, and when the claw portion is pressed from above by the disc, the first inclined surface is The tip of the disc is inserted into the center hole of the disc or is a surface that comes into contact with the upward receiving surface until it is inserted into the center hole of the disc, and the second inclined surface is the tip of the claw and the tip of the claw is the center of the disc By inserting the second inclined surface into the surface that comes into contact with the upward receiving surface after being inserted into the hole, the angle with respect to the pressing direction is made smaller than that of the first inclined surface, and the claw is pressed from above to The direction guide surface slides along the upward receiving surface, and the claw portion moves inward. According to the present embodiment, it is possible to cope with load fluctuations and perform a stable operation.
The fifth embodiment of the present invention uses a coil spring as an elastic member in the chucking device according to the first embodiment, and determines the contact position between the claw-side stopper and the hub-side stopper as the center line of the coil spring. In addition to the lower part, the inner part is provided inward of the claw part. According to the present embodiment, the coil spring can be biased so that the tip of the claw portion faces downward.
In the chucking device according to the first embodiment, the sixth embodiment of the present invention is such that the lower end surface of the claw body has an arc shape. According to this Embodiment, the operation | movement which the front-end | tip of a nail | claw part raises can be performed stably.
A disk device according to a seventh embodiment of the present invention is a disk device using the chucking device according to the first to sixth embodiments, and a chassis exterior is constituted by a base body and a lid, and the chassis A disk insertion slot for directly inserting a disk is formed on the front surface of the exterior, the spindle motor and the pickup are held by a traverse provided in the base body, a turntable is provided on the upper surface of the spindle motor, and the traverse is attached to the base body. In contrast, they are closely spaced. According to the present embodiment, the height space for inserting the disk above the turntable can be reduced in the standby state where the disk is not inserted into the disk device, so that the disk can be directly inserted or ejected from the outside. It is suitable for a so-called slot-in type disk device.

A chucking device according to an embodiment of the present invention will be described below.
First, the hub body constituting the chucking device according to the present embodiment will be described.
FIG. 1 is a top perspective view of a hub body of a chucking device according to this embodiment, FIG. 2 is a bottom perspective view of the hub body, FIG. 3 is a front view of the hub body, and FIG. 4 is a rear view of the hub body. 5 is a side view of the hub body, FIG. 6 is a cross-sectional view taken along line AA in FIG. 3, and FIG. 7 is a cross-sectional view taken along line BB in FIG.
The hub body 150 of the turntable is configured in a dish shape by a disc-shaped upper surface 151 and a side surface 152 erected on the outer periphery of the upper surface 151. A motor shaft hole 153 into which the rotation shaft of the spindle motor is fitted is formed at the center of the upper surface 151.
The hub body 150 is provided with three claw openings 154 radially. These claw openings 154 are provided in a range from the outer periphery of the upper surface 151 to the side surface 152, and are configured such that the side surface opening width on the side surface 152 is larger than the upper surface opening width on the outer surface of the upper surface 151.
On the back side of the hub body 150, three coil stoppers 155 are provided so as to protrude from the outer periphery of the ring-shaped rib 153A that forms the motor shaft hole 153. These coil stops 155 are provided radially toward the claw opening 154.
A plurality of connecting ribs 150 </ b> A that connect the ring-shaped ribs 153 </ b> A and the side surfaces 152 are provided on the rear surface side of the hub body 150. A claw in which the claw body 170 is arranged so that a space including one coil stopper 155 and a claw opening 154 positioned in the axial direction of the coil stopper 155 is isolated from other spaces by the pair of connecting ribs 150A. A housing space 150B is formed.
On the opposing inner peripheral surfaces of the pair of connecting ribs that form the claw accommodating space 150B, there are a hub-side stopper 156A and an inclination that gradually increases toward the center of the hub body 150 inwardly of the hub-side stopper 156A. An inward guide surface 156 made of a surface is provided. The inward guide surface 156 includes at least a first inclined surface and a second inclined surface.
On the other hand, an upward receiving surface 157 is formed on the upper surface of both sides of the nail opening 154 on the side surface 152, and a downward receiving surface 158 is formed on the lower surface of both sides of the nail opening 154 on the upper surface 151. Yes.

Next, the nail body constituting the chucking device according to the present embodiment will be described.
8 is a perspective view of the lower surface side of the nail body of the chucking device according to the present embodiment, FIG. 9 is a perspective view of the upper surface of the nail body, and FIG. 10 is a perspective view of the upper surface of the nail body. FIG. 12 is a side sectional view of the claw body, FIG. 13 is a front view of the claw body, and FIG. 14 is a rear view of the claw body.
The nail body 170 includes a claw portion 171 and guide portions 172 disposed on both sides of the claw portion 171.
When the claw portion 171 is attached to the hub main body 150, the front end portion 171A located on the outermost periphery of the hub main body 150, the upper surface 171B made of a flat surface connected to the front end portion 171A, and the lower end portion 171A The disc holding surface 171C is connected in the direction and contacts the disc central hole. A tapered surface 171D is provided inward of the upper surface 171B.
A rear end surface 173 that contacts the coil spring is formed inside the claw portion 171, and the rear end surface 173 is provided with a coil stopper 175 formed by a protrusion. A recess 173 </ b> A is formed around the upper side of the coil stopper 175 on the rear end surface 173. By providing the recess 173A on the rear end surface 173 where the upper part of the coil spring abuts, the angle between the surface on which the upper part of the coil spring abuts (dent 173A) and the surface on which the lower part of the coil spring abuts (rear end surface 173). It is different.
Then, in a state where the upper part of the coil spring is in contact with the recess 173A of the rear end surface 173, the surface of the recess 173A is perpendicular to the center line of the coil spring.
A lower end surface 174 of the guide portion 172 is formed in an arc shape. Further, a claw-side stopper 176 is provided on the inner side of the guide portion 172 so as to protrude laterally.
On the side portion of the claw portion 171 that is outside the guide portion 172, a downward guide surface 177 at a position lower than the tip portion 171A of the claw portion 171 and an upward guide surface 178 at a position higher than the disc holding surface 171C. I have. In the state where the claw body 170 is mounted on the hub body 150, the downward guide surface 177 is disposed at a position facing the upward receiving surface 157, and the downward guide is pressed by pressing the claw portion 170 from above. The surface 177 slides along the upward receiving surface 157. When the claw body 170 is mounted on the hub body 150, the upward guide surface 178 is disposed at a position facing the downward receiving surface 158. Further, the outward end portion of the upward guide surface 178 is made higher than the upward guide surface 178. The downward guide surface 177 is composed of at least a first inclined surface and a second inclined surface.

Next, a more detailed configuration and chucking operation of the chucking device according to the present embodiment will be described with reference to FIGS.
FIG. 15 is a cross-sectional view of the main part of the chucking device showing a standby state or a state immediately after the disc is inserted into the disc device.
The hub body 150 is provided at the center of the upper surface of the spindle motor 31A. The claw body 170 is disposed between the hub body 150 and the receiving surface 31B on the rotor side of the spindle motor 31A.
A coil spring 180 is provided as an elastic member between the coil stopper 155 of the hub body 150 and the coil stopper 175 of the claw body 170. That is, the claw body 170 is urged outward of the hub body 150 by the coil spring 180. The coil spring 180 is provided so that the outer end on the coil stopper 175 side is positioned below the inner end on the coil stopper 155 side.
Further, the claw-side stopper 176 is brought into contact with the hub-side stopper 156A so that the claw body 170 does not protrude outward. Here, the contact position between the claw-side stopper 176 and the hub-side stopper 156 </ b> A is set inward of the hub body 150 with respect to the claw portion 171 and below the center line of the coil spring 180.
In the state immediately after the disc is inserted into the disc device as shown in FIG. 15, the claw portion 171 of the claw body 170 is arranged below the height of the upper surface 151 of the hub 150. Further, the outer end of the coil spring 180 is in contact with the recess 173 </ b> A of the rear end surface 173 at the top. The same applies to a standby state in which no disc is inserted.

FIG. 16 is a cross-sectional view of the main part of the chucking device showing a state where the chucking device is raised to the disc side by a predetermined distance from the state of FIG. 15.
As the chucking device rises, the claw portion 171 is pressed by the disc from the upper surface 171B.
In this way, the claw-side stopper 176 slides along the inward guide surface 156 by pressing the claw portion 171 from the upper surface 171B. That is, the claw-side stopper 176 slides so as to gradually increase toward the inside of the hub main body 150. On the other hand, the downward guide surface 177 slides along the upward receiving surface 157 with the movement of the claw-side stopper 176. Accordingly, the claw main body 170 moves inward of the hub main body 150 by the sliding of the claw side stopper 176 and the downward guide surface 177. In addition, by pressing the claw portion 171 from the upper surface 171B, the upper portion of the outer end portion of the coil spring 180 is separated from the recess 173A of the rear end surface 173, and the lower portion of the outer end portion of the coil spring 180 is rear end surface 173. Abut.

FIG. 17 is a cross-sectional view of the main part of the chucking device showing the state in which the tip of the claw portion is inserted into the center hole of the disc, and FIG. 18 shows the chucking device to the disc side from the state of FIG. FIG. 19 is a fragmentary cross-sectional view of the chucking device showing a state after a predetermined time has elapsed from the state of FIG. 18.
FIG. 17 shows a state in which the tip 171A of the claw 171 is inserted into the center hole of the disc. Then, when the chucking device is further raised to the disc side from the state shown in FIG. 17, the tip 171A of the claw portion 171 slides along the inner peripheral surface of the center hole of the disc as shown in FIG. To do. In this embodiment, the upward movement toward the disk side due to the interaction between the claw portion 171 and the hub main body 150 of the chucking device is up to the position shown in FIG. In the position shown in FIG. 18, that is, in the limit state where the claw portion 171 and the hub body 150 are lifted to the disk side, the downward guide surface 177 of the claw portion 171 and the upward guide surface 157 of the hub body 150 are in contact with each other. The lower end surface 174 of the claw portion 171 is in contact with the rotor-side receiving surface 31B, and the tip portion 171A of the claw portion 171 is in contact with the inner peripheral surface of the disc center hole. By appropriately setting the urging force of the coil spring 180 and the frictional resistance force between the tip 171A of the claw portion 171 and the disc, from the state of FIG. 18, without operating the chucking device, The tip portion 171A of the claw portion 171 slides on the inner wall surface of the center hole of the disc. In the operation after the position shown in FIG. 18, the downward guide surface 177 of the claw portion 171 moves away from the upward guide surface 157 of the hub body 150. Then, the tip 171A of the claw 171 is in contact with the inner peripheral surface of the disc center hole, and the tip 171A gradually moves up the inner peripheral surface of the disc center hole. On the other hand, the lower end surface 174 of the claw portion 171 remains in contact with the receiving surface 31B on the rotor side, and the contact point between the lower end surface 174 and the receiving surface 31B moves inward little by little.

Here, as described above, the inner guide surface 156 includes at least a first inclined surface and a second inclined surface. When the claw portion 171 is pressed from above by the disc, the first inclined surface is inserted into the center hole portion of the disc or just before the tip portion 171A of the claw portion 171 is inserted into the center hole portion of the disc. The stopper 176 comes into contact with the surface, and the second inclined surface is a surface with which the claw-side stopper 176 comes into contact after the tip 171A of the claw 171 is inserted into the center hole of the disk. The angle with respect to the pressing direction of the second inclined surface is smaller than that of the first inclined surface.
On the other hand, the downward guide surface 177 includes at least a first inclined surface and a second inclined surface as described above. The first inclined surface is a surface that comes into contact with the upward receiving surface 157 until the front end portion 171A of the claw portion 171 is inserted into the center hole portion of the disk or just before being inserted into the center hole portion of the disk. The inclined surface is a surface that comes into contact with the upward receiving surface 157 after the distal end portion 171A of the claw portion 171 is inserted into the center hole portion of the disk. The angle with respect to the pressing direction of the second inclined surface is smaller than that of the first inclined surface. For example, the first inclined surface of the downward guide surface 177 is configured by an arc surface, and the second inclined surface of the downward guide surface 177 is configured by a flat surface.
In this way, by configuring the inward guide surface 156 and the downward guide surface 177 with the first inclined surface and the second inclined surface, the tip portion 171A of the claw portion 171 particularly from the state shown in FIG. And the center hole inner wall surface of the disk can be stably slid.

FIG. 20 is a cross-sectional view of the main part of the chucking device showing a state after a predetermined time has elapsed from the state of FIG.
In FIG. 20, the tip portion 171A of the claw portion 171 protrudes beyond the upper surface of the disc, indicating the completion of chucking and entering the recording / reproducing state.
When the chucking is completed, the upper end of the outer end portion of the coil spring 180 is in contact with the recess 173A of the rear end surface 173. Further, the claw portion 171 is positioned higher than the upper surface 151 of the hub body 150. In the chucking completed state, the disc holding surface 171C of the claw portion 171 contacts the upper end portion of the disc center hole, and the tip end portion 171A of the claw portion 171 protrudes outward from the disc center hole and jumps upward from the upper surface of the disc. On the other hand, the upward guide surface 178 of the claw portion 171 is in contact with the downward receiving surface 158 of the hub, and the lower end surface 174 of the claw portion 171 is in contact with the receiving surface 31B on the rotor side.

Next, a chucking operation for discs having different thicknesses will be described with reference to FIGS.
FIG. 21 is a cross-sectional view of a main part of the chucking device showing a chucking completion state of a thin disk, and FIG. 22 is a cross-sectional view of a main part of the chucking device showing a chucking completion state of a medium-thickness disk. FIG. 23 is a cross-sectional view of the main part of the chucking device showing the chucking completion state of the thick disk.
When the disk shown in FIG. 21 is thin, the claw body 170 moves outward from the hub body 150 and the tip of the claw part 171 as compared to the case where the disk shown in FIG. The position of 171A is lowered. In addition, when the thickness of the disc shown in FIG. 22 is medium, the claw body 170 moves to the outside of the hub body 150 and the claw portion 171 is compared with the case where the disc shown in FIG. The position of the tip 171A is lowered. Thus, according to the present embodiment, the height of the claw can be kept low even if the movement stroke of the claw body 170 in the radial direction of the hub body 150 is increased corresponding to the disc thickness variation.

A disk device to which the chucking device according to this embodiment is applied will be described below.
24 is a plan view of the main part of the base body of the disk apparatus according to the present embodiment, FIG. 25 is a sectional side view of the main part of the disk apparatus, and FIG. 26 is a side view of the sub-slider of the disk apparatus.
In the disk apparatus according to the present embodiment, a chassis exterior is constituted by a base body and a lid, and a bezel is attached to the front surface of the chassis exterior. The disk device according to this embodiment is a slot-in type disk device in which a disk is directly inserted from a disk insertion opening provided in a bezel.

A disc insertion slot 11 into which a disc is directly inserted is formed on the front side of the base body 10. A traverse 30 is disposed on the base body 10.
The traverse 30 holds a spindle motor 31 </ b> A, a pickup 32, and driving means 33 that moves the pickup 32. The rotating shaft of the spindle motor 31A is provided with a hub main body 150 that holds a disk. The spindle motor 31A is provided on one end side of the traverse 30, and the pickup 32 is disposed on the other end side of the traverse 30 in a standby state or a chucking state. The pickup 32 is provided so as to be movable from one end side to the other end side of the traverse 30. The drive means 33 has a drive motor, a pair of rails for sliding the pickup 32, and a gear mechanism for transmitting the drive of the drive motor to the pickup 32. The pair of rails are one end side and the other end side of the traverse 30. Are arranged on both sides of the pickup 32 so as to be connected to each other.

In the traverse 30, the spindle motor 31A is located at the center of the base body 10, the reciprocating range of the pickup 32 is located closer to the disc insertion slot 11 than the spindle motor 31A, and the reciprocating direction of the pickup 32 is the disc reciprocating direction. It is arrange | positioned so that it may differ from the insertion direction. Here, the reciprocating direction of the pickup 32 and the disc insertion direction are set to an angle of 40 to 45 degrees.
The traverse 30 is supported on the base body 10 by a pair of fixed cams 34A and 34B. The pair of fixed cams 34A and 34B are preferably disposed closer to the pickup 32 than the spindle motor 31A, and are disposed closer to the disk insertion slot 11 than the standby position of the pickup 32. In this embodiment, the fixed cam 34 </ b> A is provided at the center near the inside of the disk insertion slot 11, and the fixed cam 34 </ b> B is provided at one end near the inside of the disk insertion slot 11. The fixed cams 34A and 34B are formed by a groove having a predetermined length extending in the disc insertion direction, and one end of the groove on the disc insertion port 11 side is closer to the first from the base body 10 than the other end. They are separated by the Y-axis distance. The cam pins 35A and 35B provided on the traverse 30 slide in the grooves of the fixed cams 34A and 34B, thereby displacing the traverse 30 in the disc insertion / ejection direction (X-axis direction) and also with respect to the base body 10. Can be displaced in the direction of approaching and separating (Z-axis direction).

Hereinafter, the main slider 40 and the sub-slider 50 for operating the traverse 30 will be described.
The main slider 40 and the sub-slider 50 are disposed so as to be located on the side of the spindle motor 31A. One end of the main slider 40 is disposed on the front surface side of the chassis body 10 and the other end is disposed on the rear surface side of the chassis body 10. The sub slider 50 is disposed in a direction orthogonal to the main slider 40.
A cam mechanism for displacing the traverse 30 includes a slider cam mechanism 51 and a lift cam mechanism 52, and is provided on the sub-slider 50. The slider cam mechanism 51 is composed of a groove having a predetermined length extending in the moving direction of the sub-slider 50. This groove extends from one end (main slider 40 side) end to the other end side in the direction of the disc insertion slot 11. It is made to approach in steps in the (X-axis direction). The slide pin 53 provided on the traverse 30 can displace the traverse 30 in the disc insertion / ejection direction (X-axis direction) by sliding in the groove of the slider cam mechanism 51. The elevating cam mechanism 52 is composed of a groove having a predetermined length extending in the moving direction of the sub-slider 50. This groove extends from one end side (main slider 40 side) end to the other end side end of the base body 10. (Z-axis distance) is changed stepwise. The elevating pins 54 provided on the traverse 30 can be displaced in a direction in which the traverse 30 is moved closer to and away from the base body 10 (Z-axis direction) by sliding in the groove of the elevating cam mechanism 52.

A loading motor (not shown) is disposed on one end side of the main slider 40. The drive shaft of the loading motor and one end side of the main slider 40 are connected via a gear mechanism (not shown).
The main slider 40 can be slid in the longitudinal direction (X-axis direction) by driving the loading motor. The main slider 40 is connected to the sub slider 50 by a cam lever 70.
The cam lever 70 has a rotation fulcrum 71 and is engaged with a cam groove 41 provided in the main slider 40 by a pin 72 and engaged with a cam groove provided in the sub-slider 50 by a pin 74.
The cam lever 70 has a function of moving the sub slider 50 in conjunction with the movement of the main slider 40 and displacing the traverse 30 by operating the slider cam mechanism 51 and the lift cam mechanism 52 by the movement of the sub slider 50.

The traverse 30 is further supported by the base body 10 by a pair of fixed cams 36A and 36B. The pair of fixed cams 36 </ b> A and 36 </ b> B is preferably disposed between the fixed cams 34 </ b> A and 34 </ b> B and the sub-slider 50, and is preferably disposed at an intermediate position between the fixed cams 34 </ b> A and 34 </ b> B and the sub-slider 50. The fixed cams 36A and 36B are formed of a groove having a predetermined length having the same configuration as that of the fixed cams 34A and 34B. The cam pins 37A and 37B provided on the traverse 30 slide in the grooves of the fixed cams 36A and 36B, thereby displacing the traverse 30 in the disc insertion direction and in the direction of approaching and separating from the base body 10. be able to.
The traverse 30, the fixed cams 34A, 34B, 36A, 36B, the main slider 40, the sub-slider 50, and the loading motor described above are provided in the base body 10, and a disc is interposed between these members and the lid 130. An insertion space is formed.

Next, a guide member that supports the disk and a lever member that operates the disk will be described.
A first disc guide (not shown) having a predetermined length is provided on one end side of the base body 10 in the vicinity of the disc insertion slot 11. The first disk guide has a groove with a “U” shape in cross section viewed from the disk insertion direction. The disk is supported by this groove.
On the other hand, a pull-in lever 80 is provided at the other end of the base body 10 near the disk insertion slot 11, and a second disk guide 81 is provided at the movable side end of the pull-in lever 80. The second disk guide 81 is configured by a cylindrical roller, and is rotatably provided at the movable side end of the pull-in lever 80. A groove is formed on the outer periphery of the roller of the second disk guide 81, and the disk is supported by the groove.
The pull-in lever 80 is arranged so that the movable side end portion operates closer to the disc insertion slot 11 than the fixed side end portion, and has a rotation fulcrum 82 at the fixed side end portion. A third disc guide 84 having a predetermined length is provided between the movable side end and the fixed side end of the pull-in lever 80. The pull-in lever 80 includes a pin 85, and the pull-in lever 80 operates when the pin 85 slides in the cam groove 42 of the main slider 40. That is, the pull-in lever 80 operates so that the second disk guide 81 is moved closer to and away from the spindle motor 31A as the main slider 40 moves.

The base body 10 is provided with a discharge lever 100. A guide 101 is provided at the movable side end of the discharge lever 100. A rotation fulcrum 102 is provided on the other end side of the discharge lever 100. The discharge lever 100 is operated in conjunction with the movement of the main slider 40 by the pin 103 and the cam groove 43.
A discharge lever 110 is provided on the side of the base body 10 that faces the discharge lever 100. A guide 111 is provided at the movable side end of the discharge lever 110. A rotation fulcrum 112 is provided on the other end side of the discharge lever 110. The discharge lever 110 operates in the same manner as the movement of the discharge lever 100.
On the other hand, a fixing pin 120 is provided on the rear side of the base body 10. The fixing pin 120 regulates the position of the disk when loading or chucking the disk.

As shown in FIG. 25, the chassis exterior is composed of a base body 10 and a lid 130, and an opening 132 is provided at the center of the lid 130. The opening 132 is a circular opening having a larger radius than the center hole of the disk. Therefore, the opening is larger than the hub main body 150 of the spindle motor 31A fitted in the center hole of the disk.
On the outer peripheral portion of the opening 132, a throttle portion 133 is formed so as to protrude toward the base body 10 side.

Hereinafter, an operation mechanism of the traverse 30 will be described with reference to FIGS. 24 to 38.
The position of the cam mechanism and the pin in FIGS.
FIG. 27 is a plan view of the main part of the base body showing a state in which a first predetermined time has elapsed from the start of the disk chucking operation of the disk device, FIG. 28 is a side sectional view of the main part in the same state, and FIG. It is a side view of a sub slider.
30 is a plan view of the main part of the base body showing a state in which a second predetermined time has passed since the state of FIG. 27, FIG. 31 is a side sectional view of the main part in the same state, and FIG. 32 is a sub-slider in the same state. FIG.
FIG. 33 is a plan view of the main part of the base body showing the most elevated state of the traverse after the third predetermined time has elapsed from the state of FIG. 30, FIG. 34 is a side sectional view of the main part in the same state, and FIG. It is a side view of the sub slider in the same state.
FIG. 36 is a plan view of the main part of the base body showing the recording / reproducing state of the disc after the fourth predetermined time has elapsed from the state of FIG. 33, FIG. 37 is a side sectional view of the main part in the same state, and FIG. It is a side view of the sub slider in the same state.

First, in the disk loading completion state, as shown in FIGS. 24 to 26, the traverse 30 is disposed at the position closest to the rear side and closest to the base body 10 side.
That is, in this state, the slide pin 53 is located at one end side (main slider 40 side) end of the slide cam mechanism 51. Therefore, the traverse 30 is disposed at a position closest to the rear side. The cam pins 35A and 35B are located at the other end of the grooves of the fixed cams 34A and 34B. Therefore, the other end side (the pickup 32 side) of the traverse 30 is disposed at a position closest to the base body 10. The elevating pin 54 is located at one end (main slider 40 side) end of the elevating cam mechanism 52. Therefore, one end side (spindle motor 31 </ b> A side) of the traverse 30 is disposed at a position closest to the base body 10.

The main slider 40 moves from the state shown in FIG. 24 toward the disc insertion slot 11, and the sub slider 50 moves toward the main slider 40 as the main slider 40 moves.
When the chucking operation is performed for the first predetermined time, as shown in FIGS. 27 to 29, the traverse 30 moves in the direction of the disc insertion slot 11 by the first X-axis distance and the traverse 30. The other end side is disposed at a position separated from the base body 10 by a first Y-axis distance.
That is, in this state, the slide pin 53 moves the slide cam mechanism 51 by the first Y-axis distance, and the traverse 30 moves by the first X-axis distance in the direction of the disc insertion slot 11. Accordingly, the cam pins 35A and 35B move by the first X-axis distance in the direction of one end of the groove of the fixed cams 34A and 34B, and the other end side (the pickup 32 side) of the traverse 30 is It is arranged at a position separated by 1 Z-axis distance. Further, the elevating pin 54 moves from the one end side (main slider 40 side) end of the elevating cam mechanism 52 by the first Y-axis distance, and the grooves in the range of the first Y-axis distance are the same height. Therefore, one end side (spindle motor 31 </ b> A side) of the traverse 30 is held at a position closest to the base body 10.

27, when the main slider 40 further moves in the direction of the disc insertion slot 11, the sub slider 50 further moves in the direction of the main slider 40.
In the state where the chucking operation is further performed for the second predetermined time from the state shown in FIG. 27, the other end side of the traverse 30 is moved from the base body 10 to the second Z-axis as shown in FIGS. 30 to 32. They are arranged at positions separated by a distance (second Z-axis distance> first Z-axis distance).
That is, in this state, the slide pin 53 moves the slide cam mechanism 51 by the second Y-axis distance. In this movement range, the groove of the slide cam mechanism 51 moves in the moving direction of the sub-slider 50 (Y-axis direction). The traverse 30 does not move in the direction of the disc insertion slot 11. Accordingly, the cam pins 35A and 35B do not move in the grooves of the fixed cams 34A and 34B. Further, the elevating pin 54 moves the groove of the elevating cam mechanism 52 by the second Y-axis distance, and moves one end side (spindle motor 31A side) of the traverse 30 from the base body 10 by the second Z-axis distance.

When the main slider 40 further moves in the direction of the disc insertion slot 11 from the state shown in FIG. 30, the sub-slider 50 further moves in the direction of the main slider 40.
Then, in a state where the chucking operation is further performed for a third predetermined time from the state shown in FIG. 30, the other end side of the traverse 30 is the third most spaced from the base body 10 as shown in FIGS. 33 to 35. Are arranged at the Z-axis distance.
That is, in this state, the slide pin 53 moves the slide cam mechanism 51 by the third Y-axis distance. In this movement range, the groove of the slide cam mechanism 51 moves in the moving direction of the sub-slider 50 (Y-axis direction). The traverse 30 does not move in the direction of the disc insertion slot 11. Accordingly, the cam pins 35A and 35B do not move in the grooves of the fixed cams 34A and 34B. Further, the elevating pin 54 moves the groove of the elevating cam mechanism 52 by the third Y-axis distance, and moves the one end side (spindle motor 31A side) of the traverse 30 from the base body 10 to the third Z-axis distance (maximum ascent height). )). In this state, the chucking of the hub main body 150 to the disk is completed.

33, when the main slider 40 further moves in the direction of the disc insertion slot 11, the sub slider 50 further moves in the direction of the main slider 40.
Then, as shown in FIGS. 36 to 38, the traverse 30 moves in the direction of the disc insertion slot 11, and the other end of the traverse 30 moves in the direction close to the base body 10 to move to the first Z-axis distance. It is arranged at the position.
That is, in this state, the slide pin 53 moves the slide cam mechanism 51 by the fourth Y-axis distance, and the traverse 30 moves by the second X-axis distance in the direction of the disc insertion slot 11. Therefore, the cam pins 35A and 35B move by the second X-axis distance toward one end of the groove of the fixed cams 34A and 34B, but the other end side (pickup 32 side) height of the traverse 30 does not change. . Further, the elevating pin 54 moves the groove of the elevating cam mechanism 52 by the fourth Y-axis distance, and moves one end side (spindle motor 31A side) of the traverse 30 in the direction of the base body 10 to thereby move the first Z-axis distance. Place it at the position.

By the above operation, the disc is separated from the lid 130 and is also separated from the fixing pin 120, so that the disc is in a reproduction / recording state.
Further, when the loaded disc is ejected, the loading motor is driven and the main slider 40 is moved in the direction of the other end. Basically, the above operation is performed in reverse.

  The chucking device of the present invention is useful for a disk device that is built in a so-called notebook personal computer main body, in which display means, input means, arithmetic processing means, and the like are integrated, or is integrally set.

1 is a top perspective view of a hub body of a chucking device according to an embodiment of the present invention. Bottom perspective view of the hub body Front view of the hub body Rear view of the hub body Side view of the hub body AA sectional view in FIG. BB sectional view in FIG. The lower surface side perspective view of the nail | claw main body of the chucking apparatus by a present Example. Top perspective view of the nail body Top side inward perspective view of the same nail body Side view of the same nail body Side cross-sectional view of the same nail body Front view of the same nail body Rear view of the same nail body Cross-sectional view of the main part of the chucking device showing a standby state or a state immediately after the disc is inserted into the disc device FIG. 15 is a cross-sectional view of the main part of the chucking device showing a state in which the chucking device is raised to the disc side by a predetermined distance from the state of FIG. Sectional drawing of the principal part of the chucking device showing a state where the tip of the claw is inserted into the center hole of the disc FIG. 17 is a cross-sectional view of the main part of the chucking device showing a state where the chucking device is raised to the disc side by a predetermined distance from the state of FIG. FIG. 18 is a cross-sectional view of the main part of the chucking device showing a state after a predetermined time has elapsed from the state of FIG. Sectional drawing of the principal part of the chucking apparatus which shows the state after predetermined time progress from the state of FIG. Cross-sectional view of the main part of the chucking device showing the chucking completion state of a thin disk Cross section of the main part of the chucking device showing the completion of chucking of the medium thickness disc Cross section of the main part of the chucking device showing the chucking completion state of the thick disk The principal part top view of the base main body of the disc apparatus by a present Example Cross-sectional side view of the main part of the disk unit Side view of the sub-slider of the same disk unit The principal part top view of the base main body which shows the state which the 1st predetermined time passed since the disk chucking operation start of the disk apparatus by a present Example. Side sectional view of the main part in the same state Side view of sub-slider in the same state The principal part top view of the base main body which shows the state which 2nd predetermined time passed further from the state of FIG. Side sectional view of the main part in the same state Side view of sub-slider in the same state FIG. 7 is a plan view of the main part of the base body, showing a state in which the third predetermined time further elapses from the state shown in FIG. Side sectional view of the main part in the same state Side view of sub-slider in the same state FIG. 10 is a plan view of the main part of the base body showing the state of recording / reproducing of the disc after the fourth predetermined time has passed since the state of FIG. Side sectional view of the main part in the same state Side view of sub-slider in the same state

Explanation of symbols

150 Hub body 155 Coil stopper 156A Hub side stopper 156 Inner side guide surface 157 Upper receiving surface 170 Claw body 171 Claw portion 171A Front end portion 171B Upper surface 171C Disk holding surface 171D Tapered surface 172 Guide portion 173 Rear end surface 173A Lower end surface 174 175 Coil stopper 176 Claw-side stopper 177 Downward guide surface 178 Upward guide surface 180 Coil spring

Claims (7)

In the radial direction of the hub body of the turntable, a plurality of claw bodies are provided so as to be movable, and a chucking device that holds the disk by pressing the disk center hole with the claw body,
An elastic member for urging the claw body outward with respect to the hub body is provided,
The claw body has a claw portion that comes into contact with the disk, and a claw side stopper that regulates outward movement by the elastic member,
The hub body has a claw opening from which the claw portion can protrude outward, and a hub side stopper that comes into contact with the claw side stopper,
In the recording / reproducing state where the disc is held by the claw portion,
When the disc is thin, the claw portion moves outward and the position of the claw portion is lowered as compared with the case where the disc is thick.   The upward guide surface provided on the front side of the claw body and the downward receiving surface of the hub body provided at a position facing the upward guide surface are provided with an inclination that the front side is lowered. The chucking device according to claim 1. In the radial direction of the hub body of the turntable, a plurality of claw bodies are provided so as to be movable, and a chucking device that holds the disk by pressing the disk center hole with the claw body,
An elastic member for urging the claw body outward with respect to the hub body is provided,
The claw body has a claw portion that comes into contact with the disk, and a claw side stopper that regulates outward movement by the elastic member,
The hub body has a claw opening from which the claw portion can protrude outward, and a hub side stopper that comes into contact with the claw side stopper,
The claw-side stopper that regulates the outward movement of the claw body by the elastic material is a contact part with a lower part of the lower end part of the claw body in a standby state where the disk is not held by the claw part. The chucking device is characterized in that the hub side stopper provided on the front side and abutting on the claw side stopper is an inclined surface with the lower side approaching the front side.   A downward guide surface is provided at a position below the tip of the claw portion, an upward receiving surface is provided on the hub body at a position facing the downward guide surface, and the downward guide surface is at least a first inclined surface. And when the claw portion is pressed by the disk from above, the first inclined surface is inserted into the center hole of the disk, or A surface that comes into contact with the upward receiving surface until it is inserted into the center hole portion of the disk, and the second inclined surface is the upper surface after the tip of the claw portion is inserted into the center hole portion of the disk. By making the second inclined surface a smaller angle with respect to the pressing direction than the first inclined surface and pressing the claw portion from above, the downward guide surface can be It slides along the upward receiving surface and the claw portion moves inward. Chucking device according to claim 1, wherein the.   A coil spring is used as the elastic member, and the contact position between the claw-side stopper and the hub-side stopper is provided below the center line of the coil spring and inward of the claw portion. The chucking device according to claim 1.   The chucking device according to claim 1, wherein a lower end surface of the claw body has an arc shape. A disk device using the chucking device according to any one of claims 1 to 6, wherein a chassis exterior is constituted by a base body and a lid, and a disk is directly attached to a front surface of the chassis exterior. A disk insertion slot is formed, a spindle motor and a pickup are held by a traverse provided in the base body, the turntable is provided on the upper surface of the spindle motor, and the traverse is moved close to and away from the base body. A disk device characterized by the above.

Images